2002378155726 has 96 divisors (see below), whose sum is σ = 4360125393792. Its totient is φ = 612765578880.

The previous prime is 2002378155697. The next prime is 2002378155733. The reversal of 2002378155726 is 6275518732002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 445663936 + ... + 445668428.

It is an arithmetic number, because the mean of its divisors is an integer number (45417972852).

Almost surely, 2^{2002378155726} is an apocalyptic number.

2002378155726 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2002378155726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2180062696896).

2002378155726 is an abundant number, since it is smaller than the sum of its proper divisors (2357747238066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2002378155726 is a wasteful number, since it uses less digits than its factorization.

2002378155726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6818 (or 6805 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 2002378155726 in words is "two trillion, two billion, three hundred seventy-eight million, one hundred fifty-five thousand, seven hundred twenty-six".